Artificial Intelligence (AI) is concerned with the design and analysis of autonomous agents. These are software systems and/or physical machines, with sensors and actuators, embodied, for example, within a robot or an autonomous spacecraft. An intelligent system has to perceive its environment, to act rationally towards its assigned tasks, to interact with other agents and with human beings. It relies on a broad set of general and specialized knowledge representations and reasoning mechanisms, on problem-solving and search algorithms, and on machine learning techniques. Hence, the focus of this course is to deal with Fundamental issues in intelligent systems: Search and constraint satisfaction, Knowledge representation, and reasoning.